Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
170013excellentexcellent21excellent
16009excellentexcellent21excellent
150010excellentexcellent21excellent
140012excellentexcellent21excellent
130016excellentexcellent31excellent
120015excellentexcellent31excellent
110028goodexcellent51excellent
1000120moderately pollutedexcellent111excellent
090057goodexcellent91excellent
080051goodexcellent71excellent
070064lightly pollutedexcellent71excellent
060050goodexcellent51excellent
050057goodexcellent61excellent
040066lightly pollutedexcellent81excellent
030067lightly pollutedexcellent71excellent
020064lightly pollutedexcellent91excellent
010070lightly pollutedexcellent91excellent
000079lightly pollutedexcellent101excellent
230086lightly pollutedexcellent121excellent
220095lightly pollutedexcellent111excellent
210076lightly pollutedexcellent101excellent
200057goodexcellent61excellent
190028goodexcellent51excellent
180016excellentexcellent21excellent